The “Bulgaria Mobile Number Library” refers to a comprehensive collection of information related to mobile phone numbers in Bulgaria. It is an essential resource for identifying and categorizing various mobile network providers, their number ranges, and associated services. Bulgaria, with a well-established telecommunications infrastructure, has several mobile network operators like A1, Telenor, and Vivacom, each of which manages specific number blocks. These mobile number libraries are useful for businesses, developers, and individuals looking to validate or verify Bulgarian phone numbers, particularly in data processing, telemarketing, or service delivery. The library helps in determining the provider associated with a specific number, identifying the geographic region, and confirming the legitimacy of the number. As Bulgaria’s mobile number plan continues to evolve with the growing demand for mobile services, the library stays updated with the latest number allocations, helping users avoid potential errors in communication.